Difference between revisions of "OnPlan Comparison Study 1 Weng"
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==Inputs== | ==Inputs== | ||
| + | |||
| + | ===Simulators=== | ||
| + | * Terra Tek 3D - fully 3D model | ||
| + | * U. of Texas 3D - fully 3D model | ||
| + | * Original P3D - a commercial P3D simulator | ||
| + | * Modified P3D - a commercial P3D simulator modified by replacing its original height-growth model with Weng 2D flow-height model | ||
| + | |||
| + | ===Cases=== | ||
| + | <table > | ||
| + | <thead><tr class="tableizer-firstrow"><th>CASE</th><th>A</th><th>B</th><th>C</th><th>D</th><th>E*</th><th>I</th><th>J</th><th>K</th><th>L</th><th>M</th><th>N</th><th>O</th></tr></thead><tbody> | ||
| + | <tr><td>Formation Properties </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td></tr> | ||
| + | <tr><td>Young's modulus, psi </td><td>4.225E+06</td><td>4.225E+06</td><td>4.225E+06</td><td>4.225E+06</td><td>4.225E+06</td><td>7.50E+05</td><td>7.50E+05</td><td>7.50E+05</td><td>7.50E+05</td><td>5.19E+06</td><td>5.19E+06</td><td>5.19E+06</td></tr> | ||
| + | <tr><td>Poisson's ratio</td><td>0.3</td><td>0.3</td><td>0.3</td><td>0.3</td><td>0.3</td><td>0.2</td><td>0.2</td><td>0.2</td><td>0.2</td><td>0.29</td><td>0.29</td><td>0.29</td></tr> | ||
| + | <tr><td>Stress contrast, psi </td><td>200</td><td>400</td><td>800</td><td>400</td><td>400</td><td>100</td><td>100</td><td>100</td><td>500</td><td>900, 1400</td><td>900, 1400</td><td>900, 1400</td></tr> | ||
| + | <tr><td>Fracture toughness, psi in^0.5 </td><td>1000</td><td>1000</td><td>1000</td><td>1000</td><td>1000</td><td>1000</td><td>1000</td><td>1000</td><td>1000</td><td>4920</td><td>4920</td><td>4920</td></tr> | ||
| + | <tr><td>Fluid Properties </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td></tr> | ||
| + | <tr><td>K, (lbf-sec^n)/ft^2</td><td>0.0031</td><td>0.0031</td><td>0.0031</td><td>0.0016</td><td>0.0031</td><td>0.12</td><td>0.07</td><td>0.00002</td><td>0.07</td><td>0.00157</td><td>0.15</td><td>0.00002</td></tr> | ||
| + | <tr><td>n</td><td>1</td><td>1</td><td>1</td><td>1</td><td>1</td><td>0.39</td><td>0.75</td><td>1</td><td>0.75</td><td>1</td><td>0.4</td><td>1</td></tr> | ||
| + | <tr><td>Leak-off, ft/min^0.5 </td><td>0.0006</td><td>0.0006</td><td>0.0006</td><td>0.0006</td><td>0.0006</td><td>0.000163</td><td>0.000163</td><td>0.000163</td><td>0.000163</td><td>0.000043</td><td>0.000043</td><td>0.000043</td></tr> | ||
| + | <tr><td>Spurt loss, gal/ft^2</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0.025</td><td>0.025</td><td>0.025</td><td>0.025</td><td>0.00035</td><td>0.00035</td><td>0.00035</td></tr> | ||
| + | <tr><td>Other Data</td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td></tr> | ||
| + | <tr><td>Pumping rate, bbl/min </td><td>20</td><td>20</td><td>20</td><td>20</td><td>20</td><td>40</td><td>40</td><td>40</td><td>40</td><td>25</td><td>25</td><td>25</td></tr> | ||
| + | <tr><td>Pumping volume, 1000 gal</td><td>25</td><td>25</td><td>25</td><td>25</td><td>25</td><td>66</td><td>64</td><td>63</td><td>71</td><td>5.6</td><td>10</td><td>2.5</td></tr> | ||
| + | <tr><td>Pupming time, min</td><td>29.8</td><td>29.8</td><td>29.8</td><td>29.8</td><td>29.8</td><td>39.3</td><td>38.1</td><td>37.5</td><td>42.3</td><td>5.3</td><td>9.5</td><td>2.4</td></tr> | ||
| + | <tr><td>Perforated interval, ft </td><td>80</td><td>80</td><td>80</td><td>80</td><td>80</td><td>180</td><td>180</td><td>180</td><td>180</td><td>16.4</td><td>16.4</td><td>16.4</td></tr> | ||
| + | <tr><td>Pay-zone thickness, ft </td><td>100</td><td>100</td><td>100</td><td>100</td><td>100</td><td>223</td><td>223</td><td>223</td><td>223</td><td>62</td><td>62</td><td>62</td></tr> | ||
| + | </tbody></table> | ||
==Comparison results== | ==Comparison results== | ||
Revision as of 09:08, 16 October 2018
Contents
Brief
The case study is based on Weng [1] paper published in 1992.
Paper Summary
Pseudo 3D (P3D) hydraulic fracturing models often overpredict fracture height for a poorly contained fracture. This is caused partly by either the neglect of the fluid flow component in the vertical direction or a crude treatment of the 2D fluid flow in the fracture as 1D flow in the vertical direction in the fracture-height calculation. This paper presents a height-growth model that adopts a flow field more representative of the actual 2D flow in a fracture.— Xiaowei Weng[1]
Inputs
Simulators
- Terra Tek 3D - fully 3D model
- U. of Texas 3D - fully 3D model
- Original P3D - a commercial P3D simulator
- Modified P3D - a commercial P3D simulator modified by replacing its original height-growth model with Weng 2D flow-height model
Cases
| CASE | A | B | C | D | E* | I | J | K | L | M | N | O |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Formation Properties | ||||||||||||
| Young's modulus, psi | 4.225E+06 | 4.225E+06 | 4.225E+06 | 4.225E+06 | 4.225E+06 | 7.50E+05 | 7.50E+05 | 7.50E+05 | 7.50E+05 | 5.19E+06 | 5.19E+06 | 5.19E+06 |
| Poisson's ratio | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.2 | 0.2 | 0.2 | 0.2 | 0.29 | 0.29 | 0.29 |
| Stress contrast, psi | 200 | 400 | 800 | 400 | 400 | 100 | 100 | 100 | 500 | 900, 1400 | 900, 1400 | 900, 1400 |
| Fracture toughness, psi in^0.5 | 1000 | 1000 | 1000 | 1000 | 1000 | 1000 | 1000 | 1000 | 1000 | 4920 | 4920 | 4920 |
| Fluid Properties | ||||||||||||
| K, (lbf-sec^n)/ft^2 | 0.0031 | 0.0031 | 0.0031 | 0.0016 | 0.0031 | 0.12 | 0.07 | 0.00002 | 0.07 | 0.00157 | 0.15 | 0.00002 |
| n | 1 | 1 | 1 | 1 | 1 | 0.39 | 0.75 | 1 | 0.75 | 1 | 0.4 | 1 |
| Leak-off, ft/min^0.5 | 0.0006 | 0.0006 | 0.0006 | 0.0006 | 0.0006 | 0.000163 | 0.000163 | 0.000163 | 0.000163 | 0.000043 | 0.000043 | 0.000043 |
| Spurt loss, gal/ft^2 | 0 | 0 | 0 | 0 | 0 | 0.025 | 0.025 | 0.025 | 0.025 | 0.00035 | 0.00035 | 0.00035 |
| Other Data | ||||||||||||
| Pumping rate, bbl/min | 20 | 20 | 20 | 20 | 20 | 40 | 40 | 40 | 40 | 25 | 25 | 25 |
| Pumping volume, 1000 gal | 25 | 25 | 25 | 25 | 25 | 66 | 64 | 63 | 71 | 5.6 | 10 | 2.5 |
| Pupming time, min | 29.8 | 29.8 | 29.8 | 29.8 | 29.8 | 39.3 | 38.1 | 37.5 | 42.3 | 5.3 | 9.5 | 2.4 |
| Perforated interval, ft | 80 | 80 | 80 | 80 | 80 | 180 | 180 | 180 | 180 | 16.4 | 16.4 | 16.4 |
| Pay-zone thickness, ft | 100 | 100 | 100 | 100 | 100 | 223 | 223 | 223 | 223 | 62 | 62 | 62 |
Comparison results
References
- ↑ 1.0 1.1 Weng, Xiaowei (1992). "Incorporation of 2D Fluid Flow Into a Pseudo-3D Hydraulic Fracturing Simulator" (SPE-21849-PA). Society of Petroleum Engineers.
